Passengers queue to get aboard on the bullet train at the Mudanjiang Railway Station in Mudanjiang, northeast China's Heilongjiang Province, Dec 25, 2018. (ZHANG CHUNXIANG / XINHUA)

BEIJING - China's transportation industry has expanded steadily in September as an index measuring the vitality of the sector remained at a high level, according to the China Academy of Transportation Sciences.

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The China Transportation Services Index (CTSI) stood at 175.7 points last month, up 4.3 percent year on year, as the travel demand maintained strong during the July-August period.

The index incorporated the transport volume of passenger and cargo of various transportation means such as railway, highway, waterway and civil aviation.

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With 2010 as the base year and 100 points as the base points, the CTSI includes passenger transport and cargo transport as two sub-indexes.

The index for passenger transport rose 2.4 percent to 166.4 points last month, while that for cargo transport stood at 181 points, up 5.3 percent.